Do the MLB umpires choose whether they want to wear the dark uniforms or the light blue ones?

Question

Do the MLB umpires choose whether they want to wear the dark uniforms or the light blue ones?

Answer 1

ya i think they choose

Answer 2

Depands on the weather and what other umpirs are using.  

Answer 3

I think umpires wear light blue only during day time and black ones during night.

Answer 4

They Choose And Also Sometimes The MLB Tells Them What To Wear It Could Also Be The MLB For Umpires LOL Telling Them What To Wear